University of Twente Student Theses


Underground Wireless Communication and Wake-Up at 125 kHz

Jansen, G.A.A. (2020) Underground Wireless Communication and Wake-Up at 125 kHz.

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Abstract:Wireless Underground Sensor Networks (WUSNs) have applications in, for example, environment and infrastructure monitoring. Typically used high-frequency radio waves for communication between nodes do not penetrate soil well, which results in a short communication range. On the other hand, low frequency signal suffer from much less signal loss in soil. Magnetic Induction communication, which uses low frequency signals, is a promising technique that could be used to meet the range requirements for Wireless Sensor Network Applications. Power conservation is also a design challenge for WUSNs. Previous work suggests that Wake-Up receivers can significantly increase battery life. Multiple experiments have been conducted to find the maximum communication distance in aboveground and underground conditions. All the tests have been performed by using the same transmitter and Wake-Up receiver that operate at 125 kHz. The results of the experiments showed that the maximum communication distance was roughly the same in air and underground. The found maximum distance was 6 m, but this distance could likely be improved. Hence, the technique looks promising for WUSN applications.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science
Programme:Computer Science BSc (56964)
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